it is statistic.
to equal luck with 15 days between "chinese pool" and p2pool you would receive:
chinese pool: 15 payments from 0.1 = total 1.5btc
p2pool: 1 payment from 1.5 = total 1.5btc
Obviously that is indicative, but there may be very lucky moments and gain a lot or very unlucky..
Finally, there are alternatives pool very well managed to use instead of "chinese pool", for example slush, ckpool, kano.is...ecc.. if you really do not want to help bitcoin with p2pool at least not throw hash on pool who hold too much power (this for the safety of bitcoin)

whats the difference Did you take a good hard look at the global hash rate and the difficulty lately I think the fucking Chinese own 80 percent of it anyway. Ever talk to a china man they don't say good morning how do you feel the first words they say is lets make a deal !